Robtex

Up: 203.21.112.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.21.112.0/23
Down right: 203.21.114.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.21.112.140	PTR	speedtest-nn.vodafone.com.au
203.21.112.140	A+PTR	speedtest-nn2.vodafone.com.au
203.21.112.140	A+PTR	speedtest-nn1.vodafone.com.au
203.21.113.140	A	ek.speedtest.vodafone.com.au
203.21.113.140	A	ek1.speedtest.vodafone.com.au
203.21.114.1	A	hutag2p1.hutch.com.au
203.21.114.5	A	hutag2p5.hutch.com.au
203.21.114.10	A+PTR	hutag2p10.hutch.com.au
203.21.114.11	A	hutag2p11.hutch.com.au
203.21.114.15	A	hutag2p15.hutch.com.au
203.21.114.17	A	hutag2p17.hutch.com.au
203.21.114.18	A	hutag2p18.hutch.com.au
203.21.114.21	A	hutag2p21.hutch.com.au
203.21.114.23	A	hutag2p23.hutch.com.au
203.21.114.26	A	hutag2p26.hutch.com.au
203.21.114.27	PTR	hutag2p27.hutch.com.au
203.21.114.254	PTR	hutagate1.hutch.com.au
203.21.115.140	A	my1.speedtest.vodafone.com.au